中国科学院数学与系统科学研究院期刊网
On the Density of Transmission Eigenvalue for the Schrödinger Operator with the Robin Boundary Condition
Li Jie MA, Xiao Chuan XU
Acta Mathematica Sinica, Chinese Series . 2022, (6): 959 -966 .  DOI: 10.12386/A20210064